Process and device for twisting threads or filaments



M. LATTlON Aug. 14, 1956 PROCESS AND DEVICE FOR TWISTING THREADS OR FILAMENTS Filed Oct. 31, 195] l l l i i i l l I i 6 1 O j INVENToR 3 Mms/a Afm/ TTP/VVS United States Patent C PRGCESS AND DEVICE :FR TWISTING TI'IREADS R FILAMENTS Michel Lattion, `Morges, Switzerland, assignor to Pag Patentgesellschaft A. G., Zurich, Switzerland Application Uctober 31, 1951 -Serial No. 254,044

Claims priority, lapplication Switzerland November f4, 1950 The present .invention relates .to :a process `and .a device for the twisting or doubling of `threads or filaments of any kind.

The process is characterized by :the fact that the thread or filament to betwisted is led freely fromthe creel bobbin downwards through the bore of a vertical spindle and, on its emergence from the lower end of the said bore, upwards against over pulleys to .a vwinding bobbin .arranged above the upper end of the bored yspindle and is wound upon the said bobbin.

The device for the performance of ythe twisting process in accordance with the invention possesses a vertical spindle with a bore extending from `end to end thereof, which spindle is so held elastically and =in a vertical position to a table by a clamping vdevice Athat it can :align itself to its ideal axis of rotation.

The object of the ,invention .is illustrated-in the drawing in the form of two preferred embodiments.

Fig. 1 is a sectional view of :a device with a rotating spindle, and

Fig. 2 is a sectional View of a device withva stationary spindle.

The vertical spindle 1 is provided with a bore 2 extending throughout the length of ,the said spindle, the shoulders yof which bore at either end thereof yare rounded. The thread 3 to be twisted is guided downwards from the creel bobbin 4 through `the said bore and is, on its emergence from the rlower end of the `said bore, taken over pulleys 5, 6, which are secured to the table slab 7 by means of straps .8, vertically upwards over a pulley 9, a deecting bar 10 and a threadiguide 11, -to the winding bobbin 12, which is driven by the roller 13.

In Fig. 1 the spindle 1 is rotatably mounted .in a ball bearing 14 and a roller bearing 1S Vboth of which ernbrace the said spindle. The said bearings are held in -the two ends of a bearing sleeve 16 having .a ange k17. rOn the inner face of the flange 17 are two elastic discs or collars 18 by which the bearing sleeve 16 bears the table slab 7 and by which it is clamped thereto. On the lower face of the lower disc or collar 18 is iitted a covering disc or collar 20 against which is braced one end of a helical spring 21, whilst nuts Z2 press against the other end of the said helical spring 21, said nuts being adjustable on a screw thread 23 disposed on the lower end of the bearing sleeve 16, so that the bearing sleeve 16 can be elastically clamped more or less strongly to the table slab 7. Screwed on to the extreme end of the bearing sleeve 16 is a threaded dise 24 against which a threaded cap 25 is screwed which closes the end of the bearing sleeve and through the crown of which only the end of the spindle projects. On the cap is an eye or lug 26 with a spring-loaded plunger 27 by means of which the spindle can be braked. The spindle 1 projects freely from the upper end of the bearing sleeve 16, and on the same, immediately above the roller bearing 15, is fitted the pulley or wharve 28 over whose lower part runs portion of the drive belt, not shown, whilst on the upper face 29 ofthe said pulley or wharve the creel y2,758,437 Patented Aug. 14, 1956 A2 bobbin, likewise not shown, is mounted. ICirclips 30 serve to secure lthe ball zand roller'bearings on the spindle 1 in the bore 31 `of the lbearing lsleeve v16, whilst a bore 32 is provided for puropses yof lubrication.

.In the embodiment of Fig. 2, a flange 33 is rigidly afhxed to the bored yspindle 1, on the lower .face of which flange elastic discs or 'collars ;18, between which the table slab 7 is held, are .again disposed. The lower .portion of rthe spindle 1 is provided :with :a screw thread on which two 'nuts 34 and a disc or washer 35 are fitted which press against a helical spring 36 which inturn is braced against the metal disc lor `collar in such a way that the spindle can be elastically clamped to the table slab 7. A sleeve 37 is rotatably mounted :on the `spindle 1 above the flange 33, 'which Isleeve has :at its lower yend a thickened portion .in Ywhich the roller bearing 37 is mounted. The cylindrical portion' located above the bearing serves as a .belt pulley or wharve for the drive of the spindle. Above lthis portion vis located a collar 38 and above this again an extension 39 on which is mounted a tube 40 which carries .the ball bearing 41 at its upper end. .Below and 4above `the ball bearing 41 are inserted pans 42 to accommodate felt `seals for the ball bearing,.and the lupper end .of the tube Y4t) is sealed by a plug 43 through y.the crown of rwhich the upper end of the spindle projects. kThe spool 44 is fitted over the tube 40, and bears 4at the bottom against Vthe edge of the collar 38.

The thread or filament to be :twisted is, in the manner already described, .guided `from lthe bobbin i4 through the bore 2 of the spindle lto thetpulley'S at the lower end of the spindle .and thence upwards to `the winding bobbin.

What I claim is: v

1. An apparatus for `.twistingthreads or `the like which comprises a vertical hollow tube, a `sleeve surrounding the tube mounted `for rotation about .the .axis of the tube, means for rotating lsaid sleeve, .a cree'l bobbin mounted upon said sleeve to rotate therewith, winding means, and means including atxed pulley mounted directly below the tube but spaced therefrom for guiding threads from the bottom end of lthe ytube .to the :winding means, the space between .the lower 4end of the vtube kand the fixed pulley being unobstructed, whereby .said thread to be twisted extends from the Icreel bobbin outwardly freely in a `balloon fashion, .thence directly into the tube, through the tube .and .over said fixedl pulley to said winding means, and .'Whereby twist is imparted to the whole length ofthe thread between the upper end of the tube and the lixed pulley.

.2. In an `apparatus as claimed in claim l, means for resiliently mounting said tube upon a lixed base com* prising a second sleeve surrounding the tube, said second sleeve extending at least partially into the tirst sleeve, said second sleeve comprising bearing means adjacent said tube to permit the rotation of said tube within said second sleeve.

3. An apparatus for twisting threads or the like, cornprising a vertically positioned hollow member, a Creel bobbin, journaling means for mounting said bobbin for rotation about the longitudinal axis of said member, means for imparting rotation to said bobbin, winding means, and means including a tixed pulley located directly below said member but spaced therefrom for guiding threads from the bottom end of said member tc the winding means, the space between the lower end of the hollow member and the xed pulley being unobstructed, whereby the thread to be twisted extends from the creel bobbin outwardly freely in a ballon fashion, thence directly into the hollow space of the member, through the hollow space, and over the pulley to said winding means, and whereby twist is imparted to the whole length of the thread between the upper end of the hollow member and the fixed pulley.`

4. An apparatus for twisting threads or the like, comprising a vertically positioned hollow tube, a resiliently mounted sleevesurrounding at least a portion of said tube, bearings within said sleeve for journaling said tube for rotation within said sleeve, means for imparting a rotary motiony to said tube about its longitudinal axis, a creel bobbin `mounted concentric with said tube, winding means, and means including a lixed pulley mounted directly below said tube but spaced therefrom for guiding threads from the bottom of the tube to the winding means,

the space between the lower end of the` tube and the fixed pulley being unobstructed, whereby the thread to be twisted extends from the creel bobbin outwardly freely in a balloon fashion, thence directly into the hollow space of the tube,.through the hollow space and over the pulley to said winding means, and whereby twist is imparted to the whole length of the thread between the upper end of the tube and the tixed pulley.

5. In an apparatus for` twisting threads or the like as in claim 4, wherein said resiliently mounted sleeve comprises in its upper portion a ange, a tlat metal disc surrounding said sleeve below said flange, a resilient disc having two spaced flanges surrounding said sleeve between said metal disc and said sleeve ange, an annular fixed plate positioned between said spaced flanges, and spring means for urging said flat metal disc upwardly toward the lower surface ofsaid sleeve tlange.

6. An apparatus for twisting threads or the like, comprising a vertically 1disposed hollow tube, a resiliently mounted first rsleeve concentricallysurrounding at least a portion'fof said tube, bearings within said tirst sleeve for rotatably journaling said tubelabout its longitudinal axis, a second sleeve mounted concentric with said tube and secon imparted to the whole length of the thread between the upper end of the tube and the xed pulley.

7. A process for twisting threads or the like which comprises the steps of unwinding a thread in a balloon fashion from a rotating creel bobbinhaving its axis of rotation in a substantially vertical plane, passing said thread directly through the upper end of and into a hollow tube mounted concentrically with said creel bobbin, withdrawing said thread from the lower end of said tube, passing the thread over at least one pulley whose position relative to said tube isxed, imparting twist tothe whole length `of the thread between the upper end of the tube and the fixed pulley, and winding the thread upon a second bobbin.

8. In an apparatus for twisting threads or the like, a base, a vertical hollow tube extending through said base, a sleeve surrounding the tube mounted for rotation about the axis of the tube, means for rotating said sleeve, a second sleeve surrounding the tube, said second sleeve extending at least partly into the rst sleeve, said second sleeve comprising bearing means ladjacent said tube to permit the rotation of said tube within said second sleeve, and a creel bobbin mounted upon said rst sleeve to rotate therewith.

9. In an apparatus for twisting threads or the like, a vertically positioned hollow tube, a resiliently mounted sleeve surrounding at least a portion of said tube, bearings within said sleeve for journaling said tube for rotation within said sleeve, means for imparting a rotary motion to said tube about its longitudinal axis, the lower end of said tube being unobstructed, and a creel bobbin mounted concentric with said tube.

10. In an apparatus for twisting threads or the like, as claimed in claim 9, said resiliently mounted sleeve comprising in its upper portion a llange, a at metal disc surrounding said sleeve below said tlange, a resilient disc having two spaced flanges surrounding said sleeve between said metal disc and said sleeve flange, an annular xed plate positioned between said spaced flanges, and spring means for urging said Hat metal disc upwardly toward the lower surface of said sleeve j2l.1;xge

17,084 Fowler Apr. 21, 1857 576,444 Gerstenberger Feb. 2, 1897 1,728,663 Collins Sept. 17, 1929 1,842,932 Collins Jan. 26, 1932 2,207,641 Smith July 9, 1940 FOREIGN PATENTS 69,512 Germany Nov. 24, 1892 292,752 Italy June 30, 1932 297,355 Switzerland lune l, 1954 486,816 Germany Nov. 27, 1929 584,851 France Nov. 28, 1924 995,064 France Aug. 14, 1951 

1. AN APPARATUS FOR TWISTING THREADS OR THE LIKE WHICH COMPRISES A VERTICAL HOLLOW TUBE, A SLEEVE SURROUNDING THE TUBE MOUNTED FOR ROTATION ABOUT THE AXIS OF THE TUBE, MEANS FOR ROTATING SAID SLEEVE, A CREEL BOBBIN MOUNTED UPON SAID SLEEVE TO ROTATED THEREWITH, WINDING MEANS, AND MEANS INCLUDING A FIXED PULLEY MOUNTED DIRECTLY BELOW THE TUBE BUT SPACED THEREFROM FOR GUIDING THREADS FROM THE BOTTOM END OF THE TUBE TO THE WINDING MEANS, THE SPACE BETWEEN THE LOWER END OF THE TUBE AND THE FIXED PULLEY BEING UNOBSTRUCTED, WHEREBY SAID THREAD TO BE TWISTED EXTENDS FROM THE CREEL BOBBIN OUTWARDLY FREELY IN A BALLON FASHION, THENCE DIRECTLY INTO THE TUBE, THROUGH THE TUBE AND OVER SAID FIXED PULLEY TO SAID WINDING MEANS, AND WHEREBY TWIST IS IMPARTED TO THE 